The part that is broken is not that clamp that goes round the bar. It's the part that the light slides into.

I have put some glue on it and I am going to test it to see how it holds.

No joke about $50. It's Canadian funds and they told me because they have to order it and blah, blah, blah. I agree it sounds expensive but I don't think I will have to go that route.

Thanks all.